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Consensus and formation control on SE (3) for switching topologies
KTH, School of Engineering Sciences (SCI), Mathematics (Dept.), Optimization and Systems Theory.ORCID iD: 0000-0003-0177-1993
2016 (English)In: Automatica, ISSN 0005-1098, E-ISSN 1873-2836, Vol. 66, 109-121 p.Article in journal (Refereed) PublishedText
Abstract [en]

This paper addresses the consensus problem and the formation problem on SE(3) in multi-agent systems with directed and switching interconnection topologies. Several control laws are introduced for the consensus problem. By a simple transformation, it is shown that the proposed control laws can be used for the formation problem. The design is first conducted on the kinematic level, where the velocities are the control laws. Then, for rigid bodies in space, the design is conducted on the dynamic level, where the torques and the forces are the control laws. On the kinematic level, first two control laws are introduced that explicitly use Euclidean transformations, then separate control laws are defined for the rotations and the translations. In the special case of purely rotational motion, the consensus problem is referred to as consensus on SO(3) or attitude synchronization. In this problem, for a broad class of local representations or parameterizations of SO(3), including the Axis-Angle Representation, the Rodrigues Parameters and the Modified Rodrigues Parameters, two types of control laws are presented that look structurally the same for any choice of local representation. For these two control laws we provide conditions on the initial rotations and the connectivity of the graph such that the system reaches consensus on SO(3). Among the contributions of this paper, there are conditions for when exponential rate of convergence occurs. A theorem is provided showing that for any choice of local representation for the rotations, there is a change of coordinates such that the transformed system has a well known structure.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 66, 109-121 p.
Keyword [en]
Attitude synchronization, Formation control, Multi-agent systems, Networked robotics
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-184948DOI: 10.1016/j.automatica.2015.12.035ISI: 000371099300014ScopusID: 2-s2.0-84959497435OAI: diva2:918133

QC 20160410

Available from: 2016-04-10 Created: 2016-04-07 Last updated: 2016-04-10Bibliographically approved

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Hu, Xiaoming
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